ALBERTA OIL SANDS TECHNOLOGY AND RESEARCH AUTHORITY

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C10B DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS 118
 
  
 
C10G CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION 161

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5607577 Prevention of sulfur gas emissions from a rotary processor using lime additionJun 21, 94Mar 04, 97[C10G]
5366596 Dry thermal processorJun 09, 93Nov 22, 94[C10B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5916432 Process for dispersing transition metal catalytic particles in heavy oilExpiredSep 24, 97Jun 29, 99[C10G]
5836391 Wellbore sand control methodExpiredJul 16, 96Nov 17, 98[F21B]
5350014 Control of flow and production of water and oil or bitumen from porous underground formationsExpiredFeb 26, 92Sep 27, 94[E21B]
5284497 Desulfurization of solid carbonaceous fuels by coagglomeration with sulfur sorbentsExpiredFeb 21, 92Feb 08, 94[C10L]
5217578 Dry thermal processorExpiredApr 23, 90Jun 08, 93[C10B]
5215634 Microwave induced catalytic conversion of methane and a hydrating agent to C.sub.3 oxygenatesExpiredDec 10, 90Jun 01, 93[C07C]
5174378 Microbial manipulations of surfactant-containing foams to reduce subterranean formation permeabilityExpiredSep 30, 91Dec 29, 92[E02D, E21B]
5145002 Recovery of heavy crude oil or tar sand oil or bitumen from underground formationsExpiredFeb 19, 91Sep 08, 92[E21B]
5074358 Surfactant-stabilized foams for enhanced oil recoveryExpiredJul 03, 90Dec 24, 91[E21B]
5062482 Piezometer actuator device and method for its installation in a boreholeExpiredAug 07, 89Nov 05, 91[E21B]
5062483 Treatment for reducing water coning in an oil reservoirExpiredJun 15, 90Nov 05, 91[E21B]
5060730 Water-wetting treatment for reducing water coning in an oil reservoirExpiredJun 15, 90Oct 29, 91[E21B]
5056596 Recovery of bitumen or heavy oil in situ by injection of hot water of low quality steam plus caustic and carbon dioxideExpiredJun 07, 90Oct 15, 91[E21B]
4890482 Method and apparatus for measuring fluid viscosityExpiredAug 22, 88Jan 02, 90[G01N]
4846275 Recovery of heavy crude oil or tar sand oil or bitumen from underground formationsExpiredFeb 05, 88Jul 11, 89[E21B]
4800959 Microbial process for selectively plugging a subterranean formationExpiredNov 19, 87Jan 31, 89[E21B]
4718489 Pressure-up/blowdown combustion - a channelled reservoir recovery processExpiredSep 17, 86Jan 12, 88[E21B]
4623203 CommutatorExpiredSep 26, 85Nov 18, 86[H01R]
4623442 Apparatus for continuously separating particulate solids from liquid suspensionsExpiredSep 26, 85Nov 18, 86[B01D]
4574643 Two phase flowmeterExpiredOct 31, 84Mar 11, 86[G01F]

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